Review Binomial and Poisson Dist

Question 1

The Poisson probability distribution is always negatively skewed
T/F

Answer 1

F

Question 2

A random variable is assigned numerical values based on the outcomes of an experiment
T/F

Answer 2

T

Question 3

A discrete random variable can have only certain clearly separated values
T/F

Answer 3

T

Question 4

The random variable for a Poisson probability distribution can assume an infinite number of values
T/F

Answer 4

T

Question 5

A binomial distribution has a characteristic that the trials are independent, which means that the outcome of one trial does not affect the outcome of any other trial.
T/F

Answer 5

T

Question 6

A Poisson distribution is a discrete probability distribution. It has the same four characteristics as the binomial, but in addition, the probability of a success is small and the number of trials is relatively large
T/F

Answer 6

T

Question 7

A random variable may be either discrete or continuous.

Answer 7

T

Question 8

If the probability of success (P) remains the same, but n increases, the shape of the binomial distribution becomes more symmetrical.
T/F

Answer 8

T

Question 9

In a Poisson distribution, the probability of success may vary from trial to trial
T/F

Answer 9

F

Question 10

How many possible experimental outcomes do the binomial distribution and the Poisson distribution have? _______

Answer 10

Answer: two

Question 11

What type of population consists of a fixed number of individuals, objects, or measurements

Answer 11

finite

Question 12

. A probability distribution is a listing of the expected outcomes of an experiment and the probability of each outcome occurring. What is the sum of the probabilities? _____

Answer 12

1

Question 13

To construct a binomial distribution we need to know the total number of ___________ and the probability of a success.

Answer 13

trials

Question 14

A probability distribution shows the outcomes of an experiment and the ___________________ of each one occurring.

Answer 14

probability

Question 15

In a binomial experiment, the probability of a _________ remains constant.

Answer 15

success or failure

Question 16

In a binomial experiment, what does the probability of a failure equal?

Answer 16

1 - probability of success

Question 17

A binomial probability distribution approaches a greater degree of symmetry as the probability of success remains constant and the number of trials becomes ____________

Answer 17

larger or greater

Question 18

The Poisson distribution or, the law of improbable events, is _______________ skewed

Answer 18

positively

Question 19

A _______________ random variable can assume only a certain number of separated values

Answer 19

discrete

Question 20

A continuous random variable can assume one of an ____________ number of values within a specific range.

Answer 20

Answer: infinite

Question 21

A random variable with a Poisson distribution has one of _______ mutually exclusive values

Answer 21

2

Question 22

In a Poisson distribution each trial is ____________________.

Answer 22

independent